generated mimeType detection file from apache http mime.types file

MimeTypeController generates a map of file extensions to MIME types

It uses `mime.types` file from apache http located under
http://svn.apache.org/viewvc/httpd/httpd/trunk/docs/conf/mime.types?view=markup

This file has been placed in the public domain for unlimited
redistribution,
so we can use it and ship it with Yii.

see also yiisoft/yii#2851 and yiisoft/yii#2857

build/controllers/MimeTypeController.php

@@ -0,0 +1,72 @@
+<?php
+/**
+ * @link http://www.yiiframework.com/
+ * @copyright Copyright (c) 2008 Yii Software LLC
+ * @license http://www.yiiframework.com/license/
+ */
+
+namespace yii\build\controllers;
+
+use Yii;
+use yii\console\Controller;
+use yii\helpers\VarDumper;
+
+/**
+ * MimeTypeController generates a map of file extensions to MIME types
+ *
+ * It uses `mime.types` file from apache http located under
+ * http://svn.apache.org/viewvc/httpd/httpd/trunk/docs/conf/mime.types?view=markup
+ *
+ * This file has been placed in the public domain for unlimited redistribution,
+ * so we can use it and ship it with Yii.
+ *
+ * @author Carsten Brandt <[email protected]>
+ * @since 2.0
+ */
+class MimeTypeController extends Controller
+{
+    /**
+     * @param string $outFile the file to update. Defaults to @yii/helpers/mimeTypes.php
+     */
+    public function actionIndex($outFile = null)
+    {
+        if ($outFile === null) {
+            $outFile = Yii::getAlias('@yii/helpers/mimeTypes.php');
+        }
+        if ($content = file_get_contents('http://svn.apache.org/viewvc/httpd/httpd/trunk/docs/conf/mime.types?view=co')) {
+            $mimeMap = [];
+            foreach(explode("\n", $content) as $line) {
+                $line = trim($line);
+                if (empty($line) || $line[0] == '#') { // skip comments and empty lines
+                    continue;
+                }
+                $parts = preg_split('/\s+/', $line);
+                $mime = array_shift($parts);
+                foreach($parts as $ext) {
+                    if (!empty($ext)) {
+                        $mimeMap[$ext] = $mime;
+                    }
+                }
+            }
+            ksort($mimeMap);
+            $array = VarDumper::export($mimeMap);
+            $content = <<<EOD
+<?php
+/**
+ * MIME types.
+ *
+ * This file contains most commonly used MIME types
+ * according to file extension names.
+ * Its content is generated from the apache http mime.types file.
+ * http://svn.apache.org/viewvc/httpd/httpd/trunk/docs/conf/mime.types?view=markup
+ * This file has been placed in the public domain for unlimited redistribution.
+ */
+return $array;
+
+EOD;
+            file_put_contents($outFile, $content);
+        } else {
+            $this->stderr("Failed to download mime.types file from apache SVN.\n");
+        }
+    }
+}